ds2251t Maxim Integrated Products, Inc., ds2251t Datasheet

ds2251t

Manufacturer Part Number

ds2251t

Description

Ds2251t 128k Soft Microcontroller Module

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.DS2251T.pdf (22 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ds2251t-128-16#

Manufacturer:

Maxim Integrated Products

Quantity:

135

Current page: 1 of 22
Download datasheet (600Kb)

www.maxim-ic.com

FEATURES

DESCRIPTION

The DS2251T 128k soft microcontroller module is an 8051-compatible microcontroller module based on

nonvolatile RAM technology. It is designed for systems that need large quantities of nonvolatile memory.

Like other members of the secure microcontroller family, it provides full compatibility with the 8051

instruction set, timers, serial port, and parallel I/O ports. By using NV RAM instead of ROM, the user can

program, then reprogram the microcontroller while in-system. The application software can even change

its own operation. This allows frequent software upgrades, adaptive programs, customized systems, etc.

In addition, by using NV RAM, the DS2251T is ideal for data logging applications. The powerful real-

time clock includes interrupts for time stamp and date. It keeps time to one-hundredth of seconds using its

on-board 32kHz crystal.

8051-Compatible Microcontroller Adapts

to Its Task

32, 64, or 128kbytes of Nonvolatile SRAM

In-System Programming via On-Chip Serial

Capable of Modifying its Own Program or

Provides Separate Byte-Wide Bus for

Performs CRC-16 Check of NV RAM

High-Reliability Operation

Maintains All Nonvolatile Resources Up to

Power-Fail Reset

Early Warning Power-fail Interrupt

Watchdog Timer

Lithium Backed Memory Remembers System

Precision Reference for Power Monitor

Fully 8051-Compatible

128 Bytes Scratchpad RAM

Two Timer/Counters

On-Chip Serial Port

32 Parallel I/O Port Pins

Permanently Powered Real-Time Clock

for Program and/or Data Storage

Port

Data Memory in the End System

Peripherals

Memory

10 Years in the Absence of V

Temperature

State

at Room

1 of 22

128k Soft Microcontroller Module

PIN CONFIGURATION

72-Pin SIMM

DS2251T

REV: 061306

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